Pumping machinery.



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M. T. 6: M. C. CHAPMAN.

PUMPING MACHINERY.

APPLICATION FILED NOV. s. 1915.

1,277,382. Patented Sepf. 3,1918.

M. T. 6: M. C. CHAPMAN. PUMPING MACHINERY. APPLICATION FILED NOV. 8. m5.

Patented Sept. 3, 1918.

5 SHEETS SHEET 2. 9 .5 .57. 66 #57 66 JWVe'n ZfOf/S' I -7- aw, WIwc C CZWM,

M. T. & M. C. CHAPMAN.

PUMPING MACHINERY. APPLICATION man NOV. a. 1915 lutvntedSopt. 3, 1918.

5 SHEEIS-SHEET 3.

aerial M. T. & M. C. CHAPMAN.

PUMPING mcnmznv.

APPLICATIOI FILED NOV. 8. I915.

PatentedSept. 3, 1918.

5 SHEETS-SHEET 4.

'M. T. 81M. C. CHAPMAN.

PUMPING MACHINERY. APPLICATION: FILED NOV. 8. 1915.

Patented 3, 1918.

5 SHEETS-SHEET 5.

7722/8211025/ Mr M UNITED sTArEs PATENTOFFIGE.

MATTHEW T. CHAPMAN *AND MARK C. CHAPMAN, AURORA, ILLINOIS,ASSIGNORS TO THE AMERICAN WELL WORKS, OF AURORA, ILLINOIS, A CORPORATION OF ILLINOIS.

PUMPING MACHINERY.

To all whgm it may concern:

Be itknown that we, MATTHEW T. CHAP- MAN. and MARK- C. CHAPMAN, citizens of the United States, residing at Aurora, in the county of Kane, State of Illinois, have invented certain new and useful Improvements in Pumping Machinery, of which the followingisa specification, reference being had to the accompanying drawings.

our invention relates to pumping machinery andparticularly to the operating mechanism by which a plurality of plunger rods operating singleacting plungers are adapted to bereciprocated. It is one of the objects of our invention, to provide new and improved operating means adapts to raise the plunger rods positively, but incapable of forcing the plunger rods on their downward stroke so as to cause them; to buckle or break. It is one of the objects. of our invention to provide a construction of the type set forth by which two plunger-s such a manner as to insure a continuous upward flow of water through the discharge pipe whereby the necessity for overcoming the inertia of alternately stopping and starting the water may be avoided. It is .another object of our invention to provide pumping means of this type in. which the plunger rods are moved at a constant speed rather than at a constantly-changing speed such as is characteristic of a crank motion. It is another object of our inven gtion to inipr "dry details hereinafter pointed out. The' forth in the claims.

vedevices of this type in sun preferred means by which we have accomplished our objects are illustrated in the drawings and are hereinafter specifically described. That which we believe to be new and, desire to cover Figure 1 is a side view of our improved pumping mechanism; r

Fig. 2 is a front view of the machine shown inFig. 1; A Fig. 3 ijsn top. view of thesaid machine;

Fig. 4 is a vertical crossisect-ion through one ofthe lifting levers, being taken substantially on line i -4. of Fi f 3; Fig. is a vertical cross-El the lever shown in Fig. 4-, 'h fng taken substantially on line 5-4) of Fig. 4;

Fig. 6. isa view showing the construction of a cross-head by the use of which two of the levers are connected with 'oneof the Specification Letters Patent.

by this application is set. I

a w form ofija-tuv ,cti on 1 through .plunger rods, being substantially a vertical cross-section taken on the line 66 of Fig. 3;

Fig. 7 is an enlarged detail, being substantially a vertical cross-section taken on line 7-7 of Fig. 6;

Fig. 8 is an enlarged detail, being. a fragmentary cross-sectional view taken on line 8-8 of Fig. 3;

Fig. 9 is a side view of the plates by which one of the plunger rods is connected with the crosshead;

Fig. 10 is a View similar in a general way to Fig. 4, but showing ainodified form of parts for operating the lever;

' Fig. 11,is a horizontal cross-section taken on line-1111 of Fig. 10;

Fig. 12 is another view but showing a modified form .of connections between the lever and the plunger rod;

Fig. 13 is a side view, partly broken away,

showing a modified form of construction by which the forward end of the lever or walk- 1ng beam is moved vertically at a constant Speed on its upward stroke and at a faster coistant 'speed upon its downward stroke; an

Fig. 14: is a top view of the parts shown in Fig. 13, being in part a sectional View taken on line l4=-14 of Fig. 13.

Referring to Figs. 1 to 9, inclusive, in which corresponding parts are indicated by the same ireference characters,.--

20, indicates a base of any suitable type built abo ht the upper end of a well tube 21 (see Fig; 2) having mounted thereon. a:wa-

ter-dischfarge head 22 'connec ed with a main or otheri water-pipe 23. E tending down- Patented Sept. 3, 1918 Application filed November 8, 1915. Serial No.60,280. I

ward thf ough the head 22 a d through the water-discharge casing 21 are two plunger.

rods 2421-25, the plunger rod 24 being in the 25 extendingherethrough, A stu ngrbox 26 of any suita 1e type surrounds the plungerjloo' rod 24 in the u pper face oftl efhead 22, ing to prevent, the passage of water from the. head 22 'aboutthe plunger rod. At the up per end of the plunger rod24 (see Fig. 7) suitable packing 27 is held in osition by an adjustable gland 28 about t e plunger rod 25. I

29 indicates'a base of any suitable type rising 'above the base 20, being preferably formed of concrete or cement integrally with the-base 20-. Mounted upon the base 29 there is a frame 30 comprising standards 31--32 between which is revolublymounted l or pipe with the plun er rod together by a plurality of bolts 48.

\ gen r it revolubly mounted in suitable bearings therein by means of suitable hubs or trunnions 4-5, best shown in Fig. 5. Fixed 'upon the shaft 33, meshing with the gears ell within the housings formed by the levers '38391-0, are three pinions 46 by which the gears ll are adapted to be driven by power from the shaft 33. Each of the. gears 44 is provided with a plurality of openings 47, in any one of which a pin is adapted. to be 'ilurcd. Upon the outer ends of the pin 48 of each gear 4A are mounted two links 49, the lower ends of which are pivotally secured in any suitable manner on the frame 30, as by a plurality of pins 50, for example.

Each of the pins 18 is limited in its movement to the arc of a circle about one of the pins 50. At the same time the movement of the center of each of the gears 4st is lim ited to the are ofa circle about the shaft 33. l pon the application of power to the gears 44 through the pinions 46, the levers 38--39l0 are rceiprocated upand down about the shaft as a center. Each of the levers 3S39-l0 will be in its uppermostposition when the center of its pin 48 be tween the center of the gear 4A and the een-- tor of the pin 50. Each of the levers 38-- 39-40 will be in its lowermost position when the center of the gear 44 is between the centers'o'f its pins 48 and 50 and in line therewith. In the construction shown, the pins 50am located in such position as to )8 directly below the centers of the gears 44, or substantially so, at the times when the levers are in their extreme uppermost and lowermost positions. It therefore follows that in theconstruetion shown each of the lovers 38 39-40 is moved upward by sub stantially half of a. complete revolution of its gear 44 and. is moved downward bythe other half of the complete revolution.

The arrangement is such, however, that .the levers 383940 are given a more rapid downward movement than that of their upstroke, byreason of the fact; that. the gears .44: are not driven at uniform out a complete'revolution. 1th one of the p'inions 46 being driven at a constant speed in" clockwise direction in Fig. l, the lever shown eed throughin said figure will be given a considerably more rapid movement on the down stroke than upon the upstroke, by reason of the constantl y changing position of the gear 44relative to the pinion 4-6. If the pinion 46 were, during an upward movement of the lever with the links 49 released, given a rotation in. clockwise direction in Fig. l through an angleequal to that through which the lever was moved, the gear 44 would not be rotated. Upon the basis of the gears 44 having thirtyiwo teeth, and upon the further basis that the lever is moved during an operative stroke through an angle of forty-five degrees about the shaft 33,---upon such' a basis, for moving the lever upward through its stroke of forty-five degrees, with the l1nks'49 'connected, the pinion. 46 would require such a rotation as to carry twenty teeth successively into mesh with the gear 44, that is to say, sixteen. teeth representing one hundred and eighty degrees of the gear 44 and four teeth representing forty-five degrees. For moving the lever through its down stroke, the pinion 46 would require such a rotation as to @lwry twelve teeth into engagement with the gear 44;, that is, sixteen teeth representing one hundred and eighty degrees of the gear minus four teeth. reprsenting forty-five degrees of the gear. That is to say, the up stroke .of the lever would continue during five-eighths of the period required for a completerevolution of the gear 44 and the down" stroke during the remaining three-eighths.

As is shown by an inspection of Figs. 1., 2 and 3, each of the levers 38, 39 and 40 is in its intermediate horizontal position, the levers 38 and 39 being in the middle of their upstrokes while thelever 40is in the middleof its downstroke,-upon the basis of the pulley 37 being driven. in counterclockwise direction in Fig. .1. It therefore foi lows that upon the continued rotation of the pulley 37 in the direction indicated, the lever 40 will complete its downst'roke and will start upward while the levers 38 and 39 are still moving'upw ard together upon I their uncomple-ted upward stroke. after the levers 38 -39 will complete their. upward stroke, more downward through their entire downstroke, and start upward 111$ again before the end of the upward stroke of'the lever 40 above referred to. Each ofthe levers 3839is provided at its forward end with a groove 51, and. thelever 40 isprovided at its forward end two:

of such grooves 51. As is best shown. in Fig. l, each ofthegrooves' 51 iscurved eom forming to the arc -of a circle about the axis-.

ofth'e shaft 33. As is best shown in -Fig. 2, a cable 52 has its ends attached to the lever 40 atthe upper ends of the grooves ;51,,

the said cable .be-ing connected with the upper end-of the plungerrod 25 by means of Qa coupling' device 53 of any suitable type which .will permit the cable 52 to'slip l,ong i-' muses tudinally of itself through said connection for maintaining an'equ'aht'y of tension upon the ends of the cable. The ends of a cable 54 are connected with the levers 3839 at the upper ends of the grooves 51 therein, the

. cable 54 being connected with the plunger with the plun er rod 24 comprises 'a crosshead formed 0 two channel'irons SS-59 hav-- ing grooved rollers 60 61 revolubly secured between them for engagement with the cable 54. The channetirdns 5s-59 are connected to the plunger rod 24 by means of coupling plates (SQ-63 whiclrembrace the plunger rod above an annular flange 64- thereon, being held against upward movement relativeto the rod by means of nuts ()5 secured by means of screw-threads upon the rod 24.

Inasmuch as the grooves 51in the forward ends of the levers 38-39-40 are arc-shaped about the shaft 33 upon which such levers gears. any the use of the; shownthe bearing. surface swing, it is evident that at all times the cables 52-54 are maintained constantly in the same vertical plane as the levers are swung up and down, thus providing against any side draft upon the plunger rods 24 -25. By reason of the use of the cables 52-54 as connections between the levers and the plun ger rods, the plunger rods are insured positive 11 ard movement, while at the same time t ey are insured against being forced downwardby the levers. By thepeculiar arrangement sired lap in rods is procured, as above described.

' In Figs. 10 and ll we have shown a modifled form of lever and operating parts. In this construction, the lever 66. provided with a groove 51 is revolubly mounted u on a shaft 33 between two gears 44% whic are connected together by means of a pm or shaft 67 which is journaled in the lever'66.

The links 49 are secured at-their upperend 55 by means of two separate pins 6 8-69 14) the gears 4d" at one side of the centers of said and the gear is very mate *ally reduhed.

those of the structure shown in igs. to 9 are indicated by the same reference characters,'bi1t withthe addition of an exponent b. In this construction the lever-T0 has. the end 'of a cable 1 connected thereto, preferably of our operating parts the dethe operation of the plunger walking piodification here In'FigL 12, the partsfeorres'onding q by such a device as that shown in Fig. 8.

mm the lever the cable 71 runs over a pulley 72 revolubly mounted by means qf'a pin or shaft 73, the cable 71 on the o posito s1de of the pulley 72 being connected )y any suitable means such as 74: with one of the plunger rods. Upon the rotation of the' gear 44* in clockwise direction in said Fig.

12, the, forward end of the lever 70 is given a rapid upward movement permitting .the

plunger 25* to drop rapidly. The down-.

ward stroke of the lever 70 is comparatively much slower whereby the operative upward plunger rod 'as to procure the desired results. nasmuch as this reversed operation of the lever 70 is procured merely by reversin the direction of rotation of the gear 44: an the pinion 46" from that abovedescribed in .con-

stroke of the plunger 25 is rendered; enough J slower than the downward stroke of such be rest rictedto this particular means nor to the use of the pins 48 at all, except as hereinafter specifically claimed, our inven tion comprising broadly means havinga" bearing on the gear 4.4-. eccentrically thereof adapted ,to'move toward and from the axis of the lever, but held substantially against movement in the direction in which the lever is adapted be restricted, except as-hereinafter claimed,

to swing. Neither do we'wish to to having the gears 4 3i and 46 directly in meshwithout the use of auxiliary driving means of suitable type.

So far, as we are aware we are the first in the art to provide a pumping mechanism comprising a walking beam, a plunger'rod connected with said walking beam,. and

means for driving said walking beam,independently) of the connections b'etweeii the cam and the lunger; comprising a ear carried by the walking earn meshing with the driving gear, is movable wit the walking beam,

andour claims are to beconstrued accordingly.

InFigs, 1d and 14 we have illustrated a cam means Wlllbh construction com risin not-only serves e purpose of controlling the posltion of the gear mounted upon thg links 49. ofthe'.

1 to an: calls-j. the leveror-walkp i .125 of the vertical movement the construction shown in walkingbeamfin lieu of the construction shown lILFi s. ing a vertical swinging 0 ing beam, but also serves the irregularity of the "lever- In 14 a'standard 75 carries at its to compensate for 11. per emu shaft 76 upon which is revolu b y mounteda two-part lover "or walking inion about which the izo 0 two connected parts 77-78 com- A x levcror Walking beam having a i .oie it connected at the upper end of an ar -shapcd groove 80. Fixedly mounted upon the shaft 76 a pinion 81 meshing with. a gee r revolubly mounted by means of hubs or trunnions 83--8l in a suitable hearing provided by the two-part lever 77- 78. The shaft 76 is provided with a driving wheel 85 of any suitable type.

Mounted upon each of the hubs or trunnions 83-84 upon the outer end thereof is a suitable cam 86, being formed integrally therewith or fixed in position thereonby any suitable means. Revolubly' mounted below the earns 86 are suitable rollers 8788 adapted to"cooperate with said cams for causing the walking beam to rise upon the rotation of the gear 82 and for controllingthe downward movement of said walking beam. The cams 86 are, in the construction shown, iaid out to produce movement of the forward end of the walking-beam 77-78 upward at constant speed throughout its stroke and a subsequent movement of the walking beam downward also at a constant speed throughout the stroke at approximately twice as great a speed, upontlie rotation of the driving pinion 81 at a; con stant speed of rotation in clockwise direction in Fig. 13, this opera-tionbeing desired under certain circumstances in preference to the constantly-varying speed of movement of the walking-beams of the construc tions shown in Figs. 1 to 12.

With the cams 86 causing an upward stroke of one plunger at a constant slow speed and causing a subsequent. downward movement offsuch plunger at a comparatively more rapid speed, and with similarlyarranged cam mechanism causing a like movement of aisecond plunger, it will be readily understood that upon the proper timing of the cams of one plunger relative to the cams of the other plunger therewill bea lap in the movement of the two plungers such as to prevent any stop age of the water being raised alternately y the upward strokes of thetwo plungers. use of our improved cam mechanism, even when the lap in the movement of the two plungers is comparatively small, the two plungers will upon each upward movement of each plunger have assumed the samemaximum rate of upward movement so as to be moving in unison prior to the completion of the upward 'movement o 'the plunger nearer the upper end of its stroke.

That we claim as our invetmtion and de sire to secure by Letters Patent, is i 1. In a pump, the combinftion of'a plunger rod, a lever provided with bearings spaced apart, a gear revolubly mounted between sald bearings on an axis parallel withthat upon which said lever mounted, a

By the ger rod, a. lever in the form of a housing providing bearings in its side walls, a gear revolubly mounted in said housing between said hearings on an axis parallel with that upon which said lever is mounted, a driving-gear revolubly mounted on a fixed axis adapted to drive said tirst-uai'ned gear as it moves back and forth with said lever, means connected with said firsthamcd gear c ;:centri-- rally thereof actuated by the rotation of said gears for giving the lever a vertical reciprocation, and connections between said lever and said plunger rod.

3. In a pump, the con'ibination of a plun ger rod, a lever provided with bearings spaced apart, a gear r .)\'ided with. trunnions on its side faces adapted to revolve in said hearings on an axis parallel with that upon which said lever is mounted, a driving gear revolubly mounted on a fixed axis adapted to drive said first-named gear as it moves back and forth with said lever, means connected with said first-named gear eccentrically thereof actuated by the rota'tioi'i of said gears for giving the lover a vertical reciprocation, and connections between said lever and said plunger rod.

4. In a pump, the combination oi a plunger rod, a. lever in. the form of a housing providing bearings in its side walls, a gear provided with trunnious on its side faces extending through. said bearings for enabling the gear to revolve on an axis parallel with that upon which the lever is mounted, a drivin gear revolubly mounted on a fixed axis a apted to drive said first-named gear as it moves back and fort with said lever, means connected with said first-named gear eccentrically thereof actuated by the rotation of said gears for giving the lever a vertical reciprocation, and connections between said lever and said plunger rod.

rvblublymounted on said walking beam, at

second gear adapted to drive said first named gear, and means actuated by the ro- 'tation of said second gear at a constant revolubly mounted on said walking beam, a

second gear adapted to drive said firstnamed gear, and means actuated by the retation of said second gear at a constant speed to cause said first-named gear and sald walking beam to be moved upward at a sub stantially 'constant speed and-to bemoved downward in turn at a comparatively more second gear at a constant speed to rapid substantially constant speed,

8. In a pump, the combination of a walking beam, reciprocatory pumping means connected with said walking beam, a gear revolubly mounted on saidwalking beam,

a second gear adapted to drive said firstnamed gear, and means actln'g on said firstnamed gear eccentrically thereof upon the rotation of said second .gear at a constant speed adapted to causesaid first-named gear and said walking beam to be moved upward at a substantially constant speed. 9. In a pump, the combinationpf a walkmg beam, reoiprocatory pumping means connected with said walking beam, a gear revolubly mounted on said walking beam, a second gear revolubly mounted on the axis of said walking beam and adapted-to drive said first-named gear, a cam carried by said walking beam, connections between said cam and said gears for rotating said cam, and means cooperating with said cam for causing said walking beam to be reciprocated vertically.

r 10'. In a pump, the combination of a walking beam, means connected with said walking beam,

reciprocatory pumping a gear'revolubly mounted on said walking beam, .21 second gear adapted to drive sai first-namedgear, and a cam carried by said first-named gear adapted upon the rotation of said gear to cause the gear and the walk ing beam to bereeiprocated vertically. 1 I

11. In a pump, the combination of a walking beam, reciprocatorg pumping means connected with said we kingbea-m, a dgear having a trunnion revolubly mounte on said walking beam conce; trically relative to the gear, a second gear; -adapted to drive said first-named gear, and a cam mounted on said trunnion adaptediupon the rotation of said first-named gear to cause said gear and said walking bea'nitobe reciprocated vertically. V

to be moved upward at a subetontiaii ing beam, reciprocato pumping means connected with said we king beam, a gear having trunnions revolubly mounted on said walking beam concentrically relative to the gear, a second gear adapted to drive said first-named gear and said Waiki' stant speed.

14. In a pump, the combinaticn c ing beam, reciprocato pumping connectedwith said waking bee having trunnions revolubly incur wmt; v 1., W n14 ed on said walking beam concentrically relative.

to the gear, a second gear adapted to: drive said first-named gear, and cams mounted-on said trunnions adapted upon the rotation of said second gear at a constant speed to cause said first-named gear andsaid walking beam to be moved upward at a substantially constant speed and then downward at a comparatively more rapid speed.

15. In a pump, the combination of a walking beam, reciprocatorv pumping means connected with said walking beam, a gear havin trunnions-revolubly mounted on said walking beam concentrically relative to the gear, a second gear adapted to drive said first named gear, and cams mounted on said trunnions adapted upon the rotation of said second gearat a constant speed to; cause said first-named gear and said. walking beam to be reciprocated vertically at substantially constant up and down speeds respectively.

16. In apump, the combination of a walking beam, reclp'roeatorv pumping means.

connected with said walking beam, a gear having trunnions revoluoly mounted on said walking beam concentrically relative to the gear, a secondgear adapted to drive sa d first-named gear, and cams mounted on sand I trunnions adapted upon the rotation of said second gear at a constant speed to cause,

said first-named gear and said walking beam to be moved upward at a substantially I constant speed and to be moved downward in turn at a comparatively more rapid substantially constant speed.

MATTHEW T. CHAPMAN.

MARK G. CHAPMAN. 

